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                            <div style="color:gray; word-break: break-all; font-size:12px;">原英文版地址: <a href="https://www.elastic.co/guide/en/elasticsearch/reference/7.7/ml-get-datafeed.html" rel="nofollow" target="_blank">https://www.elastic.co/guide/en/elasticsearch/reference/7.7/ml-get-datafeed.html</a>, 原文档版权归 www.elastic.co 所有<br/>本地英文版地址: <a href="../en/ml-get-datafeed.html" rel="nofollow" target="_blank">../en/ml-get-datafeed.html</a></div>
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<strong>重要</strong>: 此版本不会发布额外的bug修复或文档更新。最新信息请参考 <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/index.html" rel="nofollow">当前版本文档</a>。
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<span class="breadcrumb-node">Get datafeeds API</span>
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<div class="titlepage"><div><div>
<h2 class="title">
<a id="ml-get-datafeed"></a>Get datafeeds API<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch/edit/7.7/docs/reference/ml/anomaly-detection/apis/get-datafeed.asciidoc">edit</a><a class="xpack_tag" href="https://www.elastic.co/subscriptions"></a>
</h2>
</div></div></div>

<p>Retrieves configuration information for datafeeds.</p>
<div class="section">
<div class="titlepage"><div><div>
<h3 class="title">
<a id="ml-get-datafeed-request"></a>Request<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch/edit/7.7/docs/reference/ml/anomaly-detection/apis/get-datafeed.asciidoc">edit</a>
</h3>
</div></div></div>
<p><code class="literal">GET _ml/datafeeds/&lt;feed_id&gt;</code><br></p>
<p><code class="literal">GET _ml/datafeeds/&lt;feed_id&gt;,&lt;feed_id&gt;</code><br></p>
<p><code class="literal">GET _ml/datafeeds/</code><br></p>
<p><code class="literal">GET _ml/datafeeds/_all</code></p>
</div>

<div class="section">
<div class="titlepage"><div><div>
<h3 class="title">
<a id="ml-get-datafeed-prereqs"></a>Prerequisites<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch/edit/7.7/docs/reference/ml/anomaly-detection/apis/get-datafeed.asciidoc">edit</a>
</h3>
</div></div></div>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
If the Elasticsearch security features are enabled, you must have <code class="literal">monitor_ml</code>,
<code class="literal">monitor</code>, <code class="literal">manage_ml</code>, or <code class="literal">manage</code> cluster privileges to use this API. See
<a class="xref" href="security-privileges.html" title="Security privileges">Security privileges</a>.
</li>
</ul>
</div>
</div>

<div class="section">
<div class="titlepage"><div><div>
<h3 class="title">
<a id="ml-get-datafeed-desc"></a>Description<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch/edit/7.7/docs/reference/ml/anomaly-detection/apis/get-datafeed.asciidoc">edit</a>
</h3>
</div></div></div>
<p>You can get information for multiple datafeeds in a single API request by using a
comma-separated list of datafeeds or a wildcard expression. You can get
information for all datafeeds by using <code class="literal">_all</code>, by specifying <code class="literal">*</code> as the
<code class="literal">&lt;feed_id&gt;</code>, or by omitting the <code class="literal">&lt;feed_id&gt;</code>.</p>
<div class="important admon">
<div class="icon"></div>
<div class="admon_content">
<p>This API returns a maximum of 10,000 datafeeds.</p>
</div>
</div>
</div>

<div class="section">
<div class="titlepage"><div><div>
<h3 class="title">
<a id="ml-get-datafeed-path-parms"></a>Path parameters<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch/edit/7.7/docs/reference/ml/anomaly-detection/apis/get-datafeed.asciidoc">edit</a>
</h3>
</div></div></div>
<div class="variablelist">
<dl class="variablelist">
<dt>
<span class="term">
<code class="literal">&lt;feed_id&gt;</code>
</span>
</dt>
<dd>
<p>
(Optional, string)
Identifier for the datafeed. It can be a datafeed identifier or a wildcard
expression.
</p>
<p>If you do not specify one of these options, the API returns information about
all datafeeds.</p>
</dd>
</dl>
</div>
</div>

<div class="section">
<div class="titlepage"><div><div>
<h3 class="title">
<a id="ml-get-datafeed-query-parms"></a>Query parameters<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch/edit/7.7/docs/reference/ml/anomaly-detection/apis/get-datafeed.asciidoc">edit</a>
</h3>
</div></div></div>
<div class="variablelist">
<dl class="variablelist">
<dt>
<span class="term">
<code class="literal">allow_no_datafeeds</code>
</span>
</dt>
<dd>
<p>
(Optional, boolean)
Specifies what to do when the request:
</p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
Contains wildcard expressions and there are no datafeeds that match.
</li>
<li class="listitem">
Contains the <code class="literal">_all</code> string or no identifiers and there are no matches.
</li>
<li class="listitem">
Contains wildcard expressions and there are only partial matches.
</li>
</ul>
</div>
<p>The default value is <code class="literal">true</code>, which returns an empty <code class="literal">datafeeds</code> array when
there are no matches and the subset of results when there are partial matches.
If this parameter is <code class="literal">false</code>, the request returns a <code class="literal">404</code> status code when there
are no matches or only partial matches.</p>
</dd>
</dl>
</div>
</div>

<div class="section">
<div class="titlepage"><div><div>
<h3 class="title">
<a id="ml-get-datafeed-results"></a>Response body<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch/edit/7.7/docs/reference/ml/anomaly-detection/apis/get-datafeed.asciidoc">edit</a>
</h3>
</div></div></div>
<p>The API returns an array of datafeed resources. For the full list of properties,
see <a class="xref" href="ml-put-datafeed.html#ml-put-datafeed-request-body" title="Request body">create datafeeds API</a>.</p>
</div>

<div class="section">
<div class="titlepage"><div><div>
<h3 class="title">
<a id="ml-get-datafeed-response-codes"></a>Response codes<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch/edit/7.7/docs/reference/ml/anomaly-detection/apis/get-datafeed.asciidoc">edit</a>
</h3>
</div></div></div>
<div class="variablelist">
<dl class="variablelist">
<dt>
<span class="term">
<code class="literal">404</code> (Missing resources)
</span>
</dt>
<dd>
If <code class="literal">allow_no_datafeeds</code> is <code class="literal">false</code>, this code indicates that there are no
resources that match the request or only partial matches for the request.
</dd>
</dl>
</div>
</div>

<div class="section">
<div class="titlepage"><div><div>
<h3 class="title">
<a id="ml-get-datafeed-example"></a>Examples<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch/edit/7.7/docs/reference/ml/anomaly-detection/apis/get-datafeed.asciidoc">edit</a>
</h3>
</div></div></div>
<div class="pre_wrapper lang-console">
<pre class="programlisting prettyprint lang-console">GET _ml/datafeeds/datafeed-high_sum_total_sales</pre>
</div>
<div class="console_widget" data-snippet="snippets/1821.console"></div>
<p>The API returns the following results:</p>
<div class="pre_wrapper lang-console-result">
<pre class="programlisting prettyprint lang-console-result">{
  "count": 1,
  "datafeeds": [
    {
      "datafeed_id": "datafeed-high_sum_total_sales",
      "job_id": "high_sum_total_sales",
      "query_delay": "93169ms",
      "indices": [
        "kibana_sample_data_ecommerce"
      ],
      "query" : {
        "bool" : {
          "filter" : [
            {
              "term" : {
                "_index" : "kibana_sample_data_ecommerce"
              }
            }
          ]
        }
      },
      "scroll_size": 1000,
      "chunking_config": {
        "mode": "auto"
      },
      "delayed_data_check_config" : {
        "enabled" : true
      }
    }
  ]
}</pre>
</div>
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